| Value | Category | Cases | |
|---|---|---|---|
| -1 | Missing | 0 |
0%
|
| 1 | Impassable | 0 |
0%
|
| 2 | Very poor | 80 |
6.7%
|
| 3 | Poor | 104 |
8.7%
|
| 4 | Fair | 456 |
38%
|
| 5 | Good | 344 |
28.7%
|
| 6 | Very good | 216 |
18%
|
| 7 | None of the above | 0 |
0%
|